public NumSharp.Generic.NDArray <T> MakeGeneric <T>() where T : struct
{
var genericArray = new NumSharp.Generic.NDArray <T>(this.Storage.Shape);
genericArray.Storage.SetData(this.Storage.GetData <T>());
return(genericArray);
}
public NDArray this[NumSharp.Generic.NDArray <bool> booleanArray]
{
get
{
if (!Enumerable.SequenceEqual(this.shape, booleanArray.shape))
{
throw new IncorrectShapeException();
}
List <object> selectedList = new List <object>();
bool[] boolDotNetArray = booleanArray.Storage.GetData() as bool[];
int elementsAmount = booleanArray.size;
Array data = this.Storage.GetData();
for (int idx = 0; idx < elementsAmount; idx++)
{
if (boolDotNetArray[idx])
{
int[] indexes = booleanArray.Storage.Shape.GetDimIndexOutShape(idx);
selectedList.Add(data.GetValue(this.Storage.Shape.GetIndexInShape(indexes)));
}
}
NDArray selected = new NDArray(this.dtype, selectedList.Count);
selected.Storage.SetData(selectedList.ToArray());
return(selected);
}
set
{
if (!Enumerable.SequenceEqual(this.shape, booleanArray.shape))
{
throw new IncorrectShapeException();
}
object scalarObj = value.Storage.GetData().GetValue(0);
bool[] boolDotNetArray = booleanArray.Storage.GetData() as bool[];
int elementsAmount = booleanArray.size;
Array data = this.Storage.GetData();
for (int idx = 0; idx < elementsAmount; idx++)
{
if (boolDotNetArray[idx])
{
int[] indexes = booleanArray.Storage.Shape.GetDimIndexOutShape(idx);
data.SetValue(scalarObj, this.Storage.Shape.GetIndexInShape(indexes));
}
}
}
}
public void Compare()
{
NDArray A = new double[, ] {
{ 1, 2, 3 }, { 4, 5, 6 }
};
NumSharp.Generic.NDArray <bool> boolArr = (A < 3);
A[A < 3] = -2;
var a = A[A == -2 | A > 5];
}